Strontium-90 and Cesium-137 in North American Milk
- 2 June 1961
- journal article
- research article
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 133 (3466) , 1768-1770
- https://doi.org/10.1126/science.133.3466.1768
Abstract
The strontium-90 and cesium-137 concentrations in powdered milk in North America vary roughly with the specific activity of rain. The Sr 90 /Cs 137 ratios in over 800 powdered milk samples taken from 60 stations in North America from 1957-60 have a standard deviation of only 44 percent.Keywords
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